complete patch for #4279 ctrl +up/down + ff issue 

Signed-off-by: Aayush Anand aayushism12@gmail.com
#4279 ctrl+up/down for all ff

Signed-off-by: Aayush Anand <aayushism12@gmail.com>
complete patch for #4279 ctrl +up/down final

Signed-off-by: Aayush Anand <aayushism12@gmail.com>
4.1.13-dev

Signed-off-by: Marc Delisle <marc@infomarc.info>
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Merge remote-tracking branch 'origin/QA_4_1' into QA_4_1
Update po files
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Almost all configurable data is placed in config.inc.php. If this file does not exist, please refer to the Installation section to create one. This file only needs to contain the parameters you want to change from their corresponding default value in libraries/config.default.php.
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